| DEWALT # DW292K 1/2" Electric Impact Wrench with Kit Box, Max Torque 2,100 345 Impact Per Minute |
| DEWALT # DW292 1/2 " Impact Wrenches, Max Torque 2,100, 345 Impact Per Minute, Impact Power Wrench |
| DEWALT # DW297 3/4" Electric Impact Wrenches Max Torque 1,600, 434 Impact Per Minute, Impact Wrench |
| DEWALT # DW294 3/4" Impact Wrenches with Detent Pin Anvil, Max Torque 2,100, 345 Impact Per Minute |
| DEWALT # DW296 3/4" Electric Impact Wrench, Max Torque 2,100 , 300 Impact Per Minute, Impact Power Wrench |
| DEWALT # DW257 VSR Drywall Deck ScrewDriver, Electric Power ScrewDriver |
| DEWALT # DW252 VSR Heavy Duty Drywall Screw Driver, Electric ScrewDrivers |
| DEWALT # DW269 Heavy Duty VSR VERSA CLUTCH ScrewDriver |
| DEWALT # DW284 Heavy Duty VSR Positive-Clutch ScrewDriver |
| DEWALT # DW272 VSR Drywall ScrewDrivers, Electric Drivers |
| DEWALT # DW272WT VSR Drywall ScrewDriver, Impact Driver |
| DEWALT # DW255 Heavy Duty VSR Drywall ScrewDriver, Impact Driver |
| DEWALT # DW260K Heavy Duty All Purpose Impact ScrewDriver Kit, Electric Drivers |
| DEWALT # DW266 VSR ScrewDriver Depth Sensitive Impact Driver |
| DEWALT # DW276 Heavy Duty VSR Drywall Framing ScrewDriver, Electric Impact Driver |
| DEWALT # DW281 Heavy Duty VSR Positive Clutch ScrewDriver |
| IMPACT WRENCHES, IMPACT DRIVERS, SCREWDRIVERS |
| About Impact Wrenches and Drivers An impact wrench (also known as an air wrench, air gun, or just gun in some contexts, as well as rattle gun in some countries) is a socket wrench power tool designed to deliver high torque output with minimal exertion by the user, by storing energy in a rotating mass, then delivering it suddenly to the output shaft. Impact wrenches are widely used in many industries, such as automotive repair, heavy equipment maintenance, product assembly (often called "pulse tools" and designed for precise torque output), major construction projects, and any other instance where a high torque output is needed. Impact wrenches are available in every standard socket wrench drive size, from small 1/4" drive tools for small assembly and disassembly, up to 3.5" and larger square drives for major construction. [2] Impact wrenches are one of the most commonly used air tools, and are found in virtually every mechanic's shop. In operation, a rotating mass (the hammer) is accelerated by the motor, storing energy, then suddenly connected to the output shaft (the anvil), creating a high-torque impact. The hammer mechanism is designed such that after delivering the impact, the hammer is again allowed to spin freely, and does not stay locked. With this design, the only reaction force applied to the body of the tool is the motor accelerating the hammer, and thus the operator feels very little torque, even though a very high peak torque is delivered to the socket. This is similar to a conventional hammer, where the user applies a small, constant force to swing the hammer, which generates a very large impulse when the hammer strikes an object. Energy is stored over time, allowing a very strong, but short output impulse to be generated from a relatively weak, but constant input force. The hammer design requires a certain minimum torque before the hammer is allowed to spin separately from the anvil, causing the tool to stop hammering and instead smoothly drive the fastener if only low torque is needed, rapidly installing/removing the fastener. As the output of an impact wrench, when hammering, is a very short impact force, the actual effective torque is difficult to measure, with several different ratings in use. As the tool delivers a fixed amount of energy with each blow, rather than a fixed torque, the actual output torque changes with the duration of the output pulse. If the output is springy or capable of absorbing energy, the impulse will simply be absorbed, and virtually no torque will ever be applied, and somewhat counter-intuitively, if the object is very springy, the wrench may actually turn backwards as the energy is delivered back to the anvil, while it is not connected to the hammer and able to spin freely. A wrench that is capable of freeing a rusted nut on a very large bolt may be incapable of turning a small screw mounted on a spring. "Maximum torque" is the number most often given by manufacturers, which is the instantaneous peak torque delivered if the anvil is locked into a perfectly solid object. "Working torque" is a more realistic number for continually driving a very stiff fastener. "Nut-busting torque" is often quoted, with the usual definition being that the wrench can loosen a nut tightened with the specified amount of torque in some specified time period. Accurately controlling the output torque of an impact wrench is very difficult, and even an experienced operator will have a hard time making sure a fastener is not undertightened or overtightened using an impact wrench. Special socket extensions are available, which take advantage of the inability of an impact wrench to work against a spring, to precisely limit the output torque. Designed with spring steel, they act as large torsion springs, flexing at their torque rating, and preventing any further torque from being applied to the fastener. Some impact wrenches designed for product assembly have a built-in torque control system, such as a built-in torsion spring and a mechanism that shuts the tool down when the given torque is exceeded. When very precise torque is required, an impact wrench is only used to snug down the fastener, with a torque wrench used for the final tightening. Due to the lack of standards when measuring the maximum torque, some manufacturers are believed to inflate their ratings, or to use measurements with little bearing on how the tool will perform in actual use. Many air impact wrenches incorporate a flow regulator into their design, either as a separate control or part of the reversing valve, allowing torque to be roughly limited in one or both directions, while electric tools may use a variable speed trigger for the same effect. About Screw Guns Dewalt Screw Guns are very common in the workplace, as well as home owners. Their screw gun triggers are nice because they fit two fingers, meaning that you can have two fingers on the trigger, which helps prevent fatigue. The Dewalt screw guns feature Helical-cut steel and heat treated gears, this is one of the reasons these gun last for so long. The guns also has a metal gear housing. Dewalt Screw Guns - Dewalt offers a lot of models of screw guns ranging from 6 to 6.5 amps, depending upon the application. Also they offer different torque options from 60 to 132. If you are going to be using it on drywall, a 60 torque guns is fine. If you are looking for more of a decking gun, you might want to go with the 132 torque model |
| DEWALT Power Tools Online |